Listo brand universal carton/box cutters. Tap to open & tap to close, featuring a top hole convenient for hanging. Each single-edge steel blade lives in a galvanized steel insert under a white powder-coated steel sheath. Box of 12 carton cutters.
 
Refill blades for #900B Listo carton cutters. Individually wrapped .009" single edge steel blade w/ aluminum backing. Heavy duty - made for industrial use. Box of 100 razor blades.
 
*This listing includes one box of 9B refill razor blades (100 razor blades per box), and one box of 900B carton cutters (12 carton cutters per box)*